Roll-adjusting device for roller grinding-mills.



A, R. TATTERSALL. ROLL ADJUSTING DEVICE PoR ROLLER GRINDING MILLS.

APPLICATION FILED AUG. 4, 1910.

Patented sepas, 1912.

UNITED. STATES PATENT OFFICE.

ALFRED n. TATTERsALr., or LoNnoN, ENGLAND.

ROLL-ADJUSTING DEVICEy FOR ROLLER GRINDIN-'G-MILLS.

I Speeicationof Letters Patent Patented Sept. 3, 1912.

Original application led September 25,1909, Serial No, 519,594. Divided and this application led August 4, 1910. Serial No. -575,514.

To all whom 'it may concbr'n:

Ile it known that I, ALFRED RIsHWoRTH 'l`ATTEnsALL, a subject of the King 01E-Great Britain, lresiding I.at 75. Mark Lane, in the city and lcounty dit London, England, havev invented a newand useful Roll-Adjusting Device feti1 Roller Grinding-Mills, ot .which the following is a specification. y;

This .application is a divisional applica-- tion with respect to the co-pending application Number 519594 [iled th September 1909l for apparatus for mailing flour and mea Y My invention relates -to an improved adjusting device for the rolls of gradual reduction roller mills for grinding wheat and other cereals of the ty e 1n which one roll of; each pair is supported) in fixed bearings and the other roll of bearings in rocking levers, and the object of l my improvement is to provide a simple sol ladjusting l this invention. Fig. 2 is a section of same.l

means whereby the fixed and movable rolls may be set absolutely parallel to each other and may also be moved away from or toward each other by means of a single lever handle Without disturbing thefparallelism` of the rolls. I attain these objects by. the

mechanism illustrated in theaccompanying drawing in which 2.-

Figure 1 -represents an elevation of a roll device constructedaccording to Fig. 3' isa sectlonthrough a pair of rolls showing the method of mounting the adj u st-l able ro, to a reduced scale.

The same letters denote the same 'parts in all the figures.

A is the fixed or stationary roll which is of any approved' type,adaptable for roller mills or other machinery employing rolls, and which is`adapted to cooperate with a companion roll B, the lattew being adjustsible. The roll B is journaled at its opposite ends in the middle portions of a pair 'ot rocking levers C, .which are hinged upon any suitable fixed support D, carried by the machine to which the rolls A and 'B arel attached. Although the disclosure in the drawing shows the improved adjusting mechanism in connection with only one of the rocking levers C, still it is to be undereach pairs supported ini The rocking levers C are adapted for op,- eratlon in parallel relation, and to effect this movement there is. provided a shaft E extending in parallelism with and. in spaced relation to the roll B. The shaft E is journaled adjacent to itsopposit-e ends in suit-- able supports F carried by the machine. The shaft is provided at its end with spindle portions G,which are reduced and formed eccentrically to the shaft, and which are fixed to rotatably support the hubs of hand wheels H, the hubs in turn supporting revoluble sleeves I having radial lugs L engaging against the inner sides of the hand wheels H and' being held adjustable thereagainst by bolts J Acarrying winged nuts K binding the lu s Lto'the wheels H; The hand wheels are provided with arcuate in parallelism from the sleeves I, and en.

gage loosely throughthe upper :lends of the rocking leversC, the latter having sleeve portions for the reception of t-he rods N.

The rods N carry adjusting nuts 'I and V, bindingagainst the opposite ends ofv the sleeve portions to adjust the distances between the rocking` leve Y 1C, .and the sl ves I, the inner nut T being" feld in ad'uste position by a lock nut S on the ro N. The sleeve portions on the levers C are in the form of casings closed 'at their inner ends and housing springs U carried about the rods N. The outer ends of the springs U are engaged by washers abutting against the adjusting nuts V to ieldingly hold the levers C against the loo ed nuts T, thus admitting of the yielding of-the rollB relative. to the stationary roll A vto prevent damage to the machine or rolls in case some hard substances of undue thickness fall between the `concentric slots M for the bolts J to'v admit in their proper positions for grinding in the n usual manner. A hand lever O is fixed upon the shaft E at any convenient point, preferably adjacent one of the hand wheels H, and is adapted for swinging movement against a segment P andto be clamped in adjusted position thereto by a clip R binding against the outer side. of the segment P under the i action of a small hand wheel Q. V NVit-h this improved apparatus adjustment of the roll Bis effected as follows: The roll B is roughly set parallel to the roll A by the adjustment .of the nuts V and T and S. The sleeves I are now loosened upon the hubs of the hand-Wheels H by slackening the' Winged nuts K to loosen the bolts J in the arcuate slots M. The hand Wheels H are now'ro-tated in the proper direction to move the roll B into parallelism against the roll A. The winged nuts K are now tightened t draw the' bolts J through the slots M and bind the radial projections L of the and admit of the yielding of the roll B.

lto rotatably support the sleeves sleeves against tliehand wheels and from movement relative thereto. When this adjustment -is elected at each end of the rolls B, the roll B may be moved toward and away from the roll A by turning the shaft Elthrougli the medium of the hand lever O. The binding hand Wheel Q is turned to release the clip R from 'the segment P, where-l .by the hand lever 'O isswung into the dethe liaiid .lever turning the.

I claim :m

l. In a roll adjusting device, the combination wit-li a fixed roll, and a movable roll, of hinged levers arranged at the opposite ends of the movable roll and adapted same, a sha-tt disaiid in spaced rehaving eccentric hubs mounted iupon posed in parallelism `with lation to the rolls and spindles upon its ends, the spindles for rotation thereon, sleeves revolubly disposed upon the hubs, clamping means arranged between the hubs and the tointerloclr the same, rods adjustand a hand lever carried upon the shaft for A turning the same.

2. In combination with a fixed roll vand a y movable roll, vhinged levers arranged at the opposite ends loi the movable roll and adapted to rotatably support. the same, a shaft disposed in parallelism with'and in spaced relation to the rolls and having eccentric spindles upon its ends, rods carried upon'the outer ends of said levers adapted to swiingT the same, and adjustably connect-h ing means associated wit-li said eccentric spindle tov-adjustably connect said rods with said shaftL In combination with a lined roll and a movable roll, hinged levers at the ends of the rolls engaging the movable roll to support the same, rods extending outwardly from the levers adapted to sivingrthe same,

a shaft havin@V eccentric ortions reo'isterino' v :a D a ze with the rods, and adjusting` means on said eccentric portions connecting, said rods to :the same whereby the relative movement of the rods with respect to the shaft may he adjusted.

4. In combination with a fixed roll and a movable roll, hinged levers connected to said movable roll for adjustably and rotatably supporting the saine, a shaft associated with said rolls, and rods connecting said levers to said shaft, said rods having ad- Just-able and eccentric connection with said shaft.

5. Iii combination with a fixed roll and a.

movable roll, hinged levers arranged at the ends of lthe movable roll for adjustably supporting the same, a shaft associated with the rolls, and rods coupling said levers to said shaft, said rods having eccentric and independently adjustable connection with said shaft whereby the ends of saidnmvable roll may be independently adjusted. ALRED l. T ATTERSALL.

Witnesses T E. Harman, F. C. Harvman. 

